JP6384818B2 - Combined cycle testing machine - Google Patents

Description

  The present invention relates to a combined cycle testing machine for evaluating the corrosion resistance of various materials.

  There are multiple types of combined cycle tests, such as spray corrosion tests that deteriorate due to the chemical action of the corrosive solution and generate rust, drying tests that promote chemical reactions during the drying process, and wet tests that allow moisture to enter the coating in an expanded state. The test conditions (environmental tests) are combined into one cycle, and this cycle is repeated to accelerate the corrosion of the test piece and evaluate the corrosion resistance of various materials. The combined cycle tester can perform such combined cycle test on the same sample in one test tank. In a combined cycle testing machine, when shifting from one test condition included in one cycle to another test condition, for example, switching the environment in the test tank such as temperature and humidity conditions within a specified time can improve the test reproducibility. Is important to get.

  In general, the temperature and humidity conditions in the test tank of the combined cycle tester are the same as in the temperature-controlled humidity tank outside the test tank except for the test (such as salt spray test) where it is prohibited to disturb the atmosphere in the test tank. Controlled by controlling and humidity-controlled air that has been temperature-controlled and humidity-controlled in advance (hereinafter referred to as temperature-controlled and humidity-controlled air) is fed into a test tank and circulated by a circulating fan. In some test conditions (drying conditions, etc.), outside air is introduced into a temperature and humidity control tank to obtain a predetermined temperature and humidity, and circulating air and outside air are mixed to generate temperature and humidity controlled air. The temperature-controlled and humidity-controlled air is circulated in the test tank to replace part of the atmosphere in the test tank with the outside air. In addition, when the test conditions are transferred, outside air is introduced into the temperature-controlled humidity control tank, and temperature-controlled humidity air mixed with the outside air is circulated in the test tank so that a part of the atmosphere in the test tank and the outside air There is also a test in which the temperature and humidity conditions are switched within a specified time by circulating temperature-controlled and humidity-controlled air in the test tank while replacing.

  For controlling the temperature and humidity of the atmosphere in the test tank, for example, an auxiliary blower disclosed in Patent Document 1 has been proposed. This auxiliary blower is designed to improve the temperature and humidity conditions in the test tank by installing a blower and a duct in the test tank and changing the blowing position of the duct according to the size and shape of the DUT. Is.

  Further, in a combined cycle testing machine capable of performing a spray corrosion test such as a salt spray test, the test specimen mounting table on which the test specimen is placed is a plurality of test specimens that are formed by spraying a corrosive liquid as particles from a spray tower by natural dropping. In order to make it adhere as substantially evenly as possible, it is installed so as to extend in the horizontal direction.

JP 09-196424 A

  In general, the corrosion of test pieces exposed to the test environment (the atmosphere in which the temperature and humidity conditions in the test chamber are controlled) in the combined cycle test is the same as the temperature of the surrounding liquid in the spray corrosion test. It is promoted by changing due to fluctuations. Therefore, during the test, the temperature and humidity conditions at each test piece position need to be constant, and the temperature and humidity conditions in the test tank are transferred to the next environmental condition (for example, from the salt spray test to the dry test). In this case, it is possible to change the atmosphere in the test tank while giving the same temperature and humidity conditions to all the test pieces placed in the test tank. It is important to get results.

  As described above, in order to give the same temperature and humidity conditions to each test piece when introducing the outside air, an equal amount of the outside air is supplied to each position in the temperature and humidity control tank, and the supplied outside air is adjusted. It is necessary to uniformly mix with circulating air in a temperature-controlled humidity chamber and then send it uniformly into the test chamber.

On the other hand, in recent years, there has been a demand for a combined cycle testing machine capable of performing a large number of test pieces at a time under sufficiently homogenized test conditions for reasons such as speeding up product development. For example, large combined cycle testing machines with test vessels having a volume of about 8 m ³ have already been manufactured.

  However, along with the increase in the test tank volume in the combined cycle tester, when introducing the outside air in the combined cycle test, the outside air supplied from the outside air blower is supplied only to a part of the temperature control humidity control tank, In some cases, the circulating air and the outside air are not sufficiently mixed in the temperature control humidity tank. For this reason, when supplying the temperature-controlled air mixed with the outside air from the temperature-controlled humidity control tank, variation occurs in the vicinity of the outlet, and the test is performed under uniform temperature and humidity conditions for each test piece. There was a risk of not going.

  Therefore, when introducing outside air, reduce the variation in the amount of outside air introduced at each position in the temperature and humidity control tank, and thoroughly mix circulating air and outside air in the temperature and humidity control tank. Combined cycle that can easily adjust the temperature and humidity conditions in the test chamber while maintaining the uniformity of the temperature and humidity conditions in the test chamber by eliminating variations in the temperature and humidity conditions due to the difference in test specimen placement positions in the chamber It is desirable to provide a testing machine.

  The combined cycle testing machine of the present invention includes a test tank, a temperature control humidity tank communicating with the test tank, a plurality of outside air introduction holes provided in the temperature control humidity control tank, and a plurality of these outside air introduction holes. And an outside air blower for supplying outside air from each of the plurality of outside air introduction holes into the temperature-controlled humidity control tank via the outside air introduction path.

  In the combined cycle test machine of the present invention, the outside air blower is used to supply the outside air from each of the plurality of outside air introduction holes via the outside air introduction path into the temperature control humidity control tank. Variations in temperature and humidity due to differences in position in the humidity control tank are reduced. As a result, variations in the temperature and humidity of the atmosphere circulating between the test tank and the temperature-controlled humidity tank are also reduced.

  In the combined cycle testing machine of the present invention, it is preferable to provide an air volume adjusting mechanism at a position corresponding to each of the plurality of outside air introduction holes. This is because the air volume adjusting mechanism reduces the variation in the amount of outside air introduced by each outside air introduction hole in the temperature-controlled humidity control tank, and the circulating air and the outside air are sufficiently mixed in the temperature-controlled humidity control tank.

  In the combined cycle test machine of the present invention, the plurality of outside air introduction holes may be arranged substantially in a horizontal direction, for example. Moreover, it is provided in the temperature control humidity control tank, and is provided at a position corresponding to each of the plurality of outside air introduction holes, and further includes a plurality of circulation blowers that send air into the test tank from the outlet provided in the test tank. Good.

  In the combined cycle testing machine of the present invention, a plurality of steam introduction holes provided in the temperature control humidity control tank, a plurality of steam amount adjusting mechanisms provided in each of the steam introduction holes, and the plurality of steam introduction holes. And a humidity generator that supplies steam from each of the plurality of steam introduction holes to the temperature-controlled humidity control tank via the steam introduction path. Good.

  In the combined cycle testing machine of the present invention, a plurality of exhaust holes provided in the test tank, a plurality of exhaust amount adjusting mechanisms provided in each of the exhaust holes, and a common to the plurality of exhaust holes are provided. You may make it further provide the exhaust path formed and the exhaust hole which discharges | circulates the circulating air in a test tank out of a test tank via an exhaust path from each of several exhaust holes.

  The combined cycle test machine of the present invention may further include a refrigerator having a first cooling pipe and a second cooling pipe that are provided in the temperature-controlled humidity control tank and through which the refrigerant passes, respectively. In this case, the first cooling pipe has a first introduction end where the refrigerant is introduced and a first discharge end where the refrigerant is discharged, and the second cooling pipe is a second introduction where the refrigerant is introduced. And a second discharge end from which the refrigerant is discharged, the first introduction end and the second discharge end are close to each other, and the second introduction end and the first discharge end are close to each other Good. In the first cooling pipe and the second cooling pipe, the temperature difference due to the difference in position accompanying the progress of vaporization of the refrigerant is alleviated, and the variation in temperature and humidity due to the difference in position in the temperature-controlled humidity control tank is further reduced. This is because that.

  In the combined cycle testing machine of the present invention, a dry bulb thermometer having a dry bulb temperature sensor and a support portion supporting the dry bulb temperature sensor and extending obliquely downward with the dry bulb temperature sensor as a base point is provided in the test tank. It is good to prepare for further. This is because measurement errors due to droplets adhering to the dry bulb temperature sensor are avoided.

  According to the combined cycle testing machine of the present invention, the outside air introduced by the outside air blower is supplied to the temperature-controlled humidity control tank through a plurality of outside air introduction holes via the outside air introduction path. For this reason, a test with high reproducibility is possible while maintaining the homogeneity of the temperature and humidity conditions in the test tank.

It is the schematic showing the example of whole structure of the combined cycle testing machine which concerns on one embodiment of this invention. It is the front view which looked at the combined cycle test machine shown in FIG. 1 from the front. It is the top view which looked at the combined cycle test machine shown in FIG. 1 from the upper surface. It is a schematic diagram showing the state which looked at the cooler of the combined cycle test machine shown in FIG. 1 from the front. It is a schematic diagram showing the state which looked at the cooler of the combined cycle test machine shown in Drawing 4A from the upper part. It is the schematic showing the example of whole structure of the combined cycle test machine which concerns on a 1st modification. It is the top view seen from the upper surface of the combined cycle test machine shown in FIG. 5A. It is the schematic showing the principal part of the combined cycle test machine as a 2nd modification.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. The description will be given in the following order.
1. One embodiment (combined cycle testing machine having basic structure)
2. First modified example of the embodiment (another configuration example of the outside air introduction unit)
3. Second modification of one embodiment (example in which a plurality of steam introduction holes are provided for one steam introduction path)
4). Experimental example

<1. Embodiment>
[Composition of combined cycle tester]
FIG. 1 schematically shows a schematic configuration example of a combined cycle test machine 100 according to an embodiment of the present invention. FIG. 2 is a front view of the combined cycle testing machine 100 shown in FIG. 1 as viewed from the front. FIG. 3 is a top view of the combined cycle testing machine 100 shown in FIG. 1 as viewed from above. The combined cycle testing machine 100 shown in FIGS. 1 to 3 can repeatedly perform various environmental tests, for example, a spray corrosion test, a drying test, and a wet test, in one test tank 1. As shown in FIG. 1, the combined cycle testing machine 100 includes a test tank 1 and a temperature-controlled humidity tank 2 provided inside the main body 10, and a control unit 3. The main body 10 is, for example, a box-shaped container having a bottom portion 10A, a rear wall portion 10B, a front wall portion 10C, side wall portions 10D and 10E, and a ceiling portion 10F, and an opening 10K is provided in the front wall portion 10C. . In this specification, the vertical direction is the Y-axis direction, the horizontal direction parallel to the door 13 (explained later) is the X-axis direction, and the depth direction is the Z-axis direction. The control unit 3 uses a central processing unit (CPU) and a computer having a memory, and controls execution of various environmental tests according to a predetermined program stored in the memory.

  The test tank 1 is a member that houses a test piece S therein and provides a space in which various environmental tests are performed on the test piece S. Near the center of the test tank 1, a test piece mounting table 11 (hereinafter simply referred to as a mounting table 11) on which a plurality of test pieces S can be mounted is provided so as to extend horizontally, for example. In the test tank 1, only one stage of the mounting table 11 is provided in order to correspond to the spray corrosion test. When the plurality of mounting tables 11 are stacked and placed (that is, provided in multiple stages), the test pieces overlap each other in the vertical direction, so that the corrosive liquid sprayed by the spray tower 14 described later is naturally dropped to each test piece. It is because it becomes impossible to make it adhere to substantially uniformly. Further, in the test tank 1, four spray towers 14 for spraying the corrosive liquid into the test tank 1 in the spray corrosion test are provided, one at each of the four corners. Each spray tower 14 is supplied with, for example, a corrosive liquid stored in a corrosive liquid tank 14 </ b> A (see FIG. 3) provided outside the main body 10. It is desirable that the height position of each spray tower 14 is higher than the height position of the mounting table 11. The test tank 1 is configured such that the atmosphere satisfies a predetermined test condition when performing the above-described various tests. A partition wall 12 is provided between the test tank 1 and the temperature control humidity tank 2. The partition wall 12 is opposed to the opening 10K provided in the front wall portion 10C in the Z-axis direction. A door 13 is attached to the opening 10K so as to be openable and closable, and the test piece S can be set in the test tank 1 and the test piece S can be taken out from the test tank 1 through the opening 10K. .

  The temperature and humidity control tank 2 communicates with the test tank 1, generates air adjusted to a predetermined temperature and a predetermined humidity, that is, temperature-controlled humidity air, and uses the temperature-controlled humidity air as the test tank 1. To supply. The temperature control and humidity control tank 2 is provided with a cooler 21 and a heater 22. Control of the cooler 21 and control of the heater 22 are performed by the control unit 3.

  The cooler 21 includes, for example, a lower cooler 21L and an upper cooler 21U that are divided into two systems as shown in FIGS. 4A and 4B. The upper cooler 21U is placed on the lower cooler 21L. The upper cooler 21U has an upper cooling pipe 211 as a first cooling pipe, and the lower cooler 21L has a lower cooling pipe 212 as a second cooling pipe. The upper cooling pipe 211 and the lower cooling pipe 212 are respectively connected to a refrigerator 23 (see FIG. 3) provided outside the main body 10, and the refrigerant cooled by heat exchange in the refrigerator 23 continuously. A tubular member configured to pass through. In the upper cooling pipe 211, the refrigerant flows in from the end 211A as the first introduction end, and flows out from the end 211B as the first discharge end. On the other hand, in the lower cooling pipe 212, the refrigerant flows in from the end 212A as the second introduction end, and flows out from the end 212B as the second discharge end. Here, the upper cooling pipe 211 and the lower cooling pipe 212 are disposed so that the end 211A and the end 212B are close to each other, and the end 211B and the end 212A are close to each other. The upper cooling pipe 211 meanders in the upper cooler 21U so as to advance, for example, in the X-axis direction, and the lower cooling pipe 212 advances in the X-axis direction in the lower cooler 21L. Meandering.

  With such a configuration, for example, the variation in the cooling capacity in the X-axis direction of the lower cooler 21L and the variation in the cooling capacity in the X-axis direction of the upper cooler 21U cancel each other. The variation in the cooling capacity in the X-axis direction is reduced. This is due to the following reason. For example, for the upper cooling pipe 211, the temperature of the upper cooling pipe 211 is relatively low near the end 211A into which the refrigerant supplied from the refrigerator 23 flows, but the temperature of the refrigerant gradually increases toward the end 211B. However, the temperature of the upper cooling pipe 211 becomes relatively high in the vicinity of the end 211B where the refrigerant is finally discharged. On the other hand, regarding the lower cooling pipe 212, the temperature of the lower cooling pipe 212 is relatively low near the end 212A into which the refrigerant supplied from the refrigerator 23 flows, but the temperature of the refrigerant gradually decreases toward the end 212B. The temperature of the lower cooling pipe 212 becomes relatively high in the vicinity of the end 212B from which the refrigerant is finally discharged. Therefore, the upper cooling pipe 211 and the lower cooling pipe 212 are disposed so that the end 211A and the end 212B are close to each other, and the end 211B and the end 212A are close to each other. A mutual compensation relationship is realized in which a portion having a high cooling capacity supplements a portion having a low cooling capacity in the lower cooling pipe 212 and a portion having a high cooling capacity in the lower cooling pipe 212 supplements a portion having a low cooling capacity in the upper cooling pipe 211. .

  Furthermore, the temperature control tank 2 has a plurality of circulation fans 4 for blowing the temperature control air in the temperature control tank 2 into the test tank 1. The plurality of circulation fans 4 are arranged so as to be aligned in the X-axis direction which is the width direction (a direction orthogonal to the direction connecting the temperature-controlled humidity control tank 2 and the test tank 1).

  The circulation fan 4 includes a motor 41, a shaft 42 that is rotated by the motor 41, and a wing portion 43 that is fixed to the tip of the shaft 42. The circulation blower 4 rotates the wing portion 43 through the shaft 42 at a constant speed, for example, by a motor 41, and blows out temperature-controlled and conditioned air from the temperature-controlled humidity control tank 2 so as to maintain a constant air volume per hour. The air is sent to the test tank 1 through the mouth 15. The circulation blower 4 functions to forcibly take in the air in the test tank 1 into the temperature-controlled humidity control tank 2. Specifically, the air circulates between the test tank 1 and the temperature-controlled humidity tank 2 by driving the circulation fan 4, that is, by the circulation flow generated by the rotation of the blade 43 of the circulation fan 4. ing. At that time, the control unit 3 controls the cooler 21 and the heater 22 (controls the outside air introduction unit 5 and the later steam supply unit 7 as necessary), thereby disturbing the atmosphere in the test chamber 1. At the time of transition between each test step of the combined cycle test other than the test (such as salt spray test) that is prohibited, and between the salt spray test or other test steps, the atmosphere in the test tank 1 is set to a predetermined value. Temperature and humidity can be adjusted.

  Out of the partition wall 12 provided between the test tank 1 and the temperature control tank 2, for example, near the uppermost part, a blowout port 15 through which the temperature control air is blown from the temperature control tank 2 is provided. ing. The outlet 15 is a window through which the air in the temperature and humidity control tank 2 is supplied into the test tank 1, and is preferably positioned at least above the mounting table 11. Further, a discharge port 16 is provided in the lower part of the partition wall 12. The discharge port 16 is a window for discharging the air in the test tank 1 to the temperature and humidity control tank 2, and is provided, for example, below the mounting table 11 in the partition wall 12.

  As described above, the temperature control and humidity control tank 2 and the test tank 1 communicate with each other through the blowout port 15 and the discharge port 16. With such a configuration, the temperature-controlled air generated in the temperature-controlled humidity tank 2 is blown from the temperature-controlled humidity tank 2 by the rotation of the wing portion 43 of the circulation fan 4 and the test tank 1. Then, the air flows into the temperature-controlled humidity tank 2 again through the discharge port 16 in order.

  A wind direction adjusting unit 8 is provided at the outlet 15. The wind direction adjusting unit 8 has a plurality of wind direction plates. As the plurality of wind direction plates, there are, for example, ones extending in the horizontal direction and provided at different height positions, and ones extending in the vertical direction and arranged in the horizontal direction.

  In the test tank 1, for example, a temperature / humidity sensor 9 having a dry bulb thermometer 91 and a wet bulb thermometer 92, for example, may be further provided in the vicinity of the outlet 15 (see FIGS. 1 and 2). . Here, the dry bulb thermometer 91 includes a dry bulb temperature sensor 91A and a support portion 91B that supports the dry bulb temperature sensor 91A at the tip. The support portion 91B may be inclined so as to extend obliquely downward with the dry bulb temperature sensor 91A as a base point. This is because measurement errors due to droplets adhering to the dry bulb temperature sensor 91A are avoided by doing so. In the test tank 1, a plurality of temperature / humidity sensors 9 may be provided discretely.

  Furthermore, the outside air introduction part 5 is provided in the temperature-controlled humidity control tank 2, and external air can be introduce | transduced in the temperature-control humidity control tank 2. FIG. The outside air introduction unit 5 includes, for example, a plurality of outside air introduction holes 51, an outside air introduction path 52, an outside air blower 53, and an air volume adjustment mechanism 54. The plurality of outside air introduction holes 51 are provided in the temperature and humidity control tank 2 so as to be aligned in the X-axis direction, for example, along the rear wall portion 10B. The air volume adjustment mechanism 54 is provided on the temperature adjustment humidity control tank 2 side of the outside air introduction hole 51. The outside air blower 53 is provided outside the main body 10. The outside air introduction path 52 is provided in common to the plurality of outside air introduction holes 51 and is provided so as to connect the plurality of outside air introduction holes 51 and the outside air blower 53. Accordingly, the outside air introduction path 52 functions as a pipe serving as a path through which outside air taken in from the outside air blower 53 is conveyed to the plurality of outside air introduction holes 51. The outside air blower 53 supplies outside air from each of the plurality of outside air introduction holes 51 into the temperature-controlled humidity control tank 2 via the outside air introduction path 52. The air volume adjusting mechanism 54 adjusts the amount of outside air to be uniform in each outside air introduction hole 51 when supplying outside air from each of the plurality of outside air introduction holes 51 into the temperature control and humidity control tank 2. It is.

  In this way, by supplying the outside air from the outside air blower 53 through each of the plurality of outside air introduction holes 51 provided with the air volume adjusting mechanism 54 via the common outside air introduction path 52, The amount of outside air introduced from each outside air introduction hole 51 is homogenized, and the circulating air and the outside air are uniformly mixed in the temperature and humidity control tank 2, so that the temperature and humidity distribution in the vicinity of each outlet 15 is uneven. Is alleviated. In FIGS. 1 to 3, the number of the outside air introduction holes 51, the air volume adjustment mechanism 54, the circulation blower 4, and the blowout ports 15 are all four, but the present invention is not limited to that number. If it is above, it can select suitably. The air volume adjusting mechanism 54 has a function like a shutter, for example, so that the opening amount of the outside air introduction hole 51 can be adjusted. Accordingly, the amount of opening is reduced in the outside air introduction hole 51 at a location relatively close to the outside air blower 53, and the amount of opening is increased in the outside air introduction hole 51 at a location relatively far from the outside air blower 53. This makes it possible to homogenize the amount of outside air introduced at the plant.

  The temperature control and humidity control tank 2 is further provided with a steam supply unit 7 so that steam can be supplied into the temperature control and humidity control tank 2. The steam supply unit 7 includes a steam introduction hole 71, a steam amount adjusting mechanism 74, a steam introduction path 72, and a humidity generator 73. The steam introduction hole 71 is provided in, for example, the rear wall portion 10 </ b> B in the temperature control and humidity control tank 2. The humidity generator 73 is provided outside the main body 10. The steam introduction path 72 is a pipe provided to connect the steam introduction hole 71 and the humidity generator 73. The humidity generator 73 supplies steam from the steam introduction hole 71 to the temperature control and humidity control tank 2 via the steam introduction path 72. The steam amount adjusting mechanism 74 is provided on the temperature control chamber 2 side of the steam introduction hole 71, and when supplying steam from each of the plurality of steam introduction holes 71 into the temperature control tank 2, The steam introduction hole 71 is adjusted so that the amount of steam introduced is uniform. In this way, the steam is supplied from the humidity generator 73 into the temperature-controlled humidity control tank 2 from each of the plurality of steam introduction holes 71 provided with the steam amount adjusting mechanism 74 via the common steam introduction path 72. As a result, the amount of steam introduced into each steam introduction hole 71 is homogenized, and the circulating air and steam are homogeneously mixed in the temperature control and humidity control tank 2, so that the temperature and humidity distribution in the vicinity of each outlet 15 is uneven. Alleviated.

  The test tank 1 is further provided with an exhaust part 6, and the circulating air in the test tank 1 can be discharged out of the test tank 1 according to the amount of outside air introduced by the outside air introduction part 5. Yes. The exhaust unit 6 includes an exhaust hole 61, an exhaust amount adjusting mechanism 64, an exhaust path 62, and an exhaust hole 63. The exhaust hole 61 is a part that takes in the circulating air in the test tank 1, and a plurality of the exhaust holes 61 are provided in the test tank 1. When a plurality of exhaust holes 61 are provided, the plurality of exhaust holes 61 may be provided in both the side wall portion 10D and the side wall portion 10E as shown in FIG. 2, for example. The exhaust amount adjusting mechanism 64 is provided on each test hole 1 side of each exhaust hole 61. Each exhaust amount adjusting mechanism 64 adjusts the exhaust amount of the circulating air to be uniform in each exhaust hole 61. In FIG. 2, one exhaust hole 61 is provided in the side wall portion 10D, and the other one exhaust hole 61 is provided in the side wall portion 10E at a position facing the exhaust hole 61 provided in the side wall portion 10D. An example in which it is provided is shown. By doing so, the exhaust amount of the circulating air through each exhaust hole 61 is homogenized, and the circulating air is discharged in a well-balanced manner. The exhaust path 62 is provided in common to the plurality of exhaust holes 61 and is provided so as to connect the plurality of exhaust holes 61 and the exhaust holes 63. Therefore, the exhaust path 62 functions as a pipe that becomes a path through which the circulating air taken from the plurality of exhaust holes 61 is conveyed to the exhaust hole 63. The air exhaust hole 63 is for exhausting the circulating air in the test tank 1 from the plurality of exhaust holes 61 via the exhaust path 62 to the outside of the test tank 1. In this way, the exhaust air amount adjusting mechanism 64 homogenizes the exhaust air amount of the circulating air exhausted from each of the plurality of exhaust holes 61, and passes through the common exhaust passage 62 from the exhaust air hole 63 to the inside of the test tank 1. By discharging the circulated air to the outside of the test tank 1, it is possible to suppress the occurrence of uneven temperature and humidity distribution in the vicinity of each exhaust hole 61 in the test tank 1. Further, when the spray corrosion test is shifted to the next test condition, the outside air is introduced by the outside air introduction unit 5 so that the circulating air containing particles of the corrosive liquid sprayed from the spray tower during the spray corrosion test is discharged to the exhaust unit 6. Is discharged to the outside of the test tank 1, so that the next test condition can be quickly transferred.

  In the present invention, the number and arrangement positions of the exhaust holes 61 are not limited thereto. For example, only one exhaust hole 61 may be provided in the test chamber 1, but a plurality of exhaust holes 61 are provided as shown in FIG. 2 and a common exhaust hole is provided via a common exhaust path 62. By discharging a part of the circulating air in the test tank 1 to be replaced when the outside air is introduced using 63, the temperature / humidity distribution in the test tank 1 can be kept small. it can.

[Operational effects of combined cycle testing machine 100]
Thus, in the combined cycle test machine 100, the outside air introduction unit 5 is provided, and the outside air blower 53 draws outside air from each of the plurality of outside air introduction holes 51 into the temperature-controlled humidity control tank 2 via the outside air introduction path 52. When the outside air is supplied from each of the plurality of outside air introduction holes 51 into the temperature and humidity control tank 2 by the air volume adjusting mechanism 54, the introduction amount of the outside air is homogenized in each of the outside air introduction holes 51. The unevenness of the temperature and humidity distribution in the vicinity of each outlet 15 is alleviated by circulating the ambient air and the outside air uniformly in the temperature control and humidity chamber 2. Therefore, the variation in temperature and humidity due to the difference in the position in the temperature and humidity control tank 2 is reduced. As a result, variations in temperature and humidity circulating through the test tank 1 and the temperature-controlled humidity tank 2 are also reduced. Therefore, according to the combined cycle testing machine 100, the temperature and humidity conditions in the test tank 1 can be easily changed while maintaining the homogeneity of the temperature and humidity conditions in the test tank 1. Further, for example, even when the volume of the test tank 1 is increased, variation in temperature and humidity at the position of the test piece can be suppressed, and the corrosion behavior of each test piece due to variation in temperature and humidity conditions during the transition to the test condition. It is possible to perform a more reliable combined cycle test in which the variation of the above is suppressed.

<2. First Modification of One Embodiment>
Next, a first modified example (hereinafter referred to as modified example 1) of the above embodiment will be described. In addition, the same code | symbol is attached | subjected to the same thing as the component in embodiment, and description is abbreviate | omitted suitably.

  FIG. 5A schematically shows a schematic configuration example of the combined cycle testing machine 100A in the first modification. FIG. 5B is a top view of the combined cycle testing machine 100A shown in FIG. 5A as viewed from above.

  The temperature control humidity control tank 2A of the combined cycle testing machine 100A of the first modification is provided with an outside air introduction section 5A, and the outside air can be introduced into the temperature control humidity control tank 2A. The outside air introduction unit 5A includes, for example, a plurality of outside air introduction holes 51A, an air volume adjustment mechanism 54A, an outside air introduction path 52A, and an outside air blower 53A. The outside air blower 53A is connected to an outside air introduction path 52A provided in the horizontal direction in the X-axis direction, and is connected to the temperature control and humidity control tank 2A by a plurality of outside air introduction holes 51A provided in the outside air introduction path 52A. The plurality of outside air introduction holes 51A are provided in the rear wall portion of the temperature control and humidity control tank 2A so as to be aligned in the X-axis direction. The air volume adjustment mechanism 54A is provided on the outside air introduction path 52A side of the outside air introduction hole 51A. The outside air introduction path 52A functions as a pipe serving as a path through which outside air taken in from the outside air blower 53A is conveyed to the plurality of outside air introduction holes 51A. The outside air blower 53A supplies outside air from each of the plurality of outside air introduction holes 51A into the temperature-controlled humidity control tank 2A via the outside air introduction path 52A. The air volume adjustment mechanism 54A adjusts the introduction amount of the outside air in each of the outside air introduction holes 51A when supplying the outside air from each of the plurality of outside air introduction holes 51A into the temperature control humidity control tank 2A. It is.

  In this manner, each outside air is supplied from the outside air blower 53A through the common outside air introduction path 52A via the air volume adjustment mechanism 54 and from each of the plurality of outside air introduction holes 51A into the temperature-controlled humidity control tank 2A. The amount of outside air introduced into the introduction hole 51A is homogenized, and the circulating air and the outside air are homogeneously mixed in the temperature-controlled humidity control tank 2A, so that the temperature and humidity distribution in the vicinity of each outlet 15 is alleviated. Moreover, since the introduction amount of the outside air of the air volume adjustment mechanism 54A can be adjusted from the outside of the temperature control and humidity control tank 2A, the adjustment work can be easily performed, and the introduction amount of the outside air can be adjusted even during the test. 5A and 5B, the number of the outside air introduction holes 51A, the air volume adjusting mechanism 54, the circulation fan 4 and the outlets 15 are all four, but the present invention is not limited to that number. If it is above, it can select suitably. The air volume adjusting mechanism 54 has a structure like a valve, for example, so that the opening amount of the outside air introduction hole 51A can be adjusted. Thereby, for example, the outside air introduction hole 51A at a location relatively close to the outside air blower 53A increases the opening amount, and the outside air introduction hole 51A at a location far from the outside air blower 53A reduces the opening amount, thereby introducing each outside air. It is possible to homogenize the amount of outside air introduced through the holes 51A.

<3. Second Modification of One Embodiment>
FIG. 6 schematically illustrates a schematic configuration example in a main part of the combined cycle test machine 100B as a second modified example (hereinafter referred to as modified example 2) of the above-described embodiment. In the second modification, steam supply units 7A and 7B each having a plurality of steam introduction holes 71, a steam introduction path 72, a humidity generator 73, and a steam amount adjusting mechanism 74 are provided. The plurality of steam introduction holes 71 are provided in the temperature control and humidity control tank 2 so as to be aligned in the X-axis direction along the rear wall portion 10B, for example. The steam introduction path 72 is provided in common to the plurality of steam introduction holes 71 and is provided so as to connect the plurality of steam introduction holes 71 and the humidity generator 73. Further, a steam amount adjusting mechanism 74 is provided on each steam introduction hole 71 on the temperature and humidity control tank 2 side. In FIG. 6, some components such as the outside air introduction unit 5 are omitted in order to improve visibility.

  In the modified example 2, the steam from the humidity generator 73 is branched and introduced into the temperature-controlled humidity control tank 2 from the plurality of steam introduction holes 71 via the steam amount adjusting mechanism 74. The amount of steam introduced in 71 is homogenized, and the circulating air and steam are mixed homogeneously in the temperature-controlled humidity control tank 2, whereby the temperature and humidity distribution in the vicinity of each outlet 15 is alleviated. Therefore, the variation in temperature and humidity due to the difference in position in the temperature and humidity control tank 2 is further reduced. As a result, the variation in temperature and humidity circulating through the test tank 1 and the temperature and humidity control tank 2 is further reduced.

<4. Experimental example>
(Experimental example 1)
In the combined cycle testing machine 100 (FIGS. 1 to 3) described in the above embodiment, a salt spray test (temperature 35 ° C., humidity 95% rh or more) to a drying test (temperature 60 ° C., humidity 20% rh-30). % Rh), the temperature at each position in the vicinity of the mounting table 11 at the completion of the transition of the test condition to (rh) was measured. Here, both the width and the depth in the test tank 1 were set to 2 m (= 2000 mm). Moreover, as shown in FIGS. 1-3, the number of the outside air introduction hole 51, the air volume adjusting mechanism 54, the circulation blower 4 and the outlet 15 is all four. Two exhaust holes 61 are provided.

  As a result, the temperature at each position in the vicinity of the mounting table 11 at the completion of the transition was within the range of 60 ± 0.4 ° C. at any measurement point.

(Experimental example 2)
On the other hand, the transition of the above test conditions is completed under the same conditions as in Experimental Example 1 except that the air volume adjusting mechanism 54 is not provided and the number of the outside air introduction holes 51, the circulation blower 4 and the outlets 15 are all one. When the temperature at each position near the mounting table 11 at the time was measured, it was within the range of 60 ± 3 ° C. at any measurement point.

  As a result, according to the combined cycle test machine 100 of the present invention, the outside air blower 53 passes the outside air introduction path 52 and the outside air whose air volume is adjusted by the air volume adjusting mechanism 54 of each outside air introduction hole 51 is temperature-controlled. Since it was made to supply in the tank 2, it has confirmed that the dispersion | variation in the temperature / humidity in each test piece position was reduced also in the case of the test condition transfer in the test tank 1 of a combined cycle test.

  While the present invention has been described with reference to the embodiment, the present invention is not limited to the above embodiment, and various modifications can be made. For example, the arrangement position, shape, number, and the like of each member described in the above embodiment are examples, and are not limited to those described in the above embodiment. Moreover, you may make it provide the member other than having demonstrated in the said embodiment. Specifically, in the combined cycle test machine of the present invention, for example, as one of the test steps of the combined cycle test, an immersion liquid tank and a supply pipe for the immersion test may be further provided.

  DESCRIPTION OF SYMBOLS 100, 100A, 100B ... Combined cycle testing machine, 1 ... Test tank, 10 ... Main body, 10A ... Bottom part, 10B-10E ... Wall part, 10F ... Ceiling part, 10K ... Opening, 11 ... Test piece mounting base, 12 ... Partition Wall, 13 ... Door, 14 ... Spray tower, 15 ... Outlet, 16 ... Discharge port, 2, 2A ... Temperature-controlled humidity tank, 21 ... Cooler, 211 ... Upper cooling pipe, 212 ... Lower cooling pipe, 22 ... Heater, 3 ... control unit, 4 ... circulating fan, 41 ... motor, 42 ... shaft, 43 ... wing part, 5, 5A ... outside air introduction part, 51, 51A ... outside air introduction hole, 52, 52A ... outside air introduction path, 53 , 53A ... Outside air blower, 54, 54A ... Air volume adjusting mechanism, 6 ... Exhaust part, 61 ... Exhaust hole, 62 ... Exhaust passage, 63 ... Exhaust hole, 64 ... Exhaust quantity adjusting mechanism, 7 ... Steam supply part, 71 ... Steam introduction hole, 72 ... Steam introduction path, 73 ... Humidity generator, 7 ... steam flow control mechanism, 8 ... wind direction adjustment unit, 9 ... temperature and humidity sensor.

Claims (8)

A test chamber;
A temperature-controlled humidity tank communicating with the test tank;
A plurality of outside air introduction holes provided in the temperature control humidity tank;
An outside air introduction path provided in common to the plurality of outside air introduction holes;
A combined cycle testing machine comprising: an outside air blower that supplies outside air from each of the plurality of outside air introduction holes into the temperature control humidity tank via the outside air introduction path. 2. The combined cycle testing machine according to claim 1, wherein an air volume adjusting mechanism is provided in each of the plurality of outside air introduction holes. The combined cycle testing machine according to claim 1, wherein the plurality of outside air introduction holes are arranged substantially in a horizontal direction. An air outlet provided in the test chamber;
The apparatus further comprises a plurality of circulation blowers that are provided in positions corresponding to each of the plurality of outside air introduction holes in the temperature control humidity control tank and that send air into the test tank from the blowout port. The combined cycle testing machine according to claim 3. A plurality of steam introduction holes provided in the temperature control humidity tank;
A steam amount adjusting mechanism provided in each of the plurality of steam introduction holes;
A steam introduction path provided in common for the plurality of steam introduction holes;
The humidity generator which supplies a vapor | steam to each of the said temperature control humidity tank from each of these some vapor | steam introduction holes via the said vapor | steam introduction path, It further equipped with these. Combined cycle testing machine. A plurality of exhaust holes provided in the test chamber;
An exhaust amount adjusting mechanism provided in each of the plurality of exhaust holes;
An exhaust passage provided in common for the plurality of exhaust holes;
An exhaust hole for discharging circulating air in the test tank from the exhaust amount adjusting mechanism provided in each of the plurality of exhaust holes to the outside of the test tank via the exhaust path. The combined cycle testing machine according to any one of claims 1 to 5. A cooler having a first cooling pipe and a second cooling pipe which are respectively provided in the temperature-controlled humidity control tank and through which the refrigerant passes;
The first cooling pipe has a first introduction end into which the refrigerant is introduced and a first discharge end from which the refrigerant is discharged,
The second cooling pipe has a second introduction end into which the refrigerant is introduced and a second discharge end from which the refrigerant is discharged,
The first introduction end and the second discharge end are close to each other, and the second introduction end and the first discharge end are close to each other. The combined cycle tester described. A dry bulb thermometer further comprising a dry bulb temperature sensor and a support portion that supports the dry bulb temperature sensor and extends obliquely downward with the dry bulb temperature sensor as a base point. The combined cycle testing machine according to claim 7.

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